256516472365199 has 8 divisors (see below), whose sum is σ = 258156368074080. Its totient is φ = 254876653021536.

The previous prime is 256516472365189. The next prime is 256516472365207. The reversal of 256516472365199 is 991563274615652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256516472365199 - 2⁴ = 256516472365183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256516472365129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12344084 + ... + 25795529.

It is an arithmetic number, because the mean of its divisors is an integer number (32269546009260).

Almost surely, 2^{256516472365199} is an apocalyptic number.

256516472365199 is a deficient number, since it is larger than the sum of its proper divisors (1639895708881).

256516472365199 is a wasteful number, since it uses less digits than its factorization.

256516472365199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38182609.

The product of its digits is 734832000, while the sum is 71.

The spelling of 256516472365199 in words is "two hundred fifty-six trillion, five hundred sixteen billion, four hundred seventy-two million, three hundred sixty-five thousand, one hundred ninety-nine".